#!/bin/sh

##
# This script finds the current network configuration (if any)
# and fill the networking2.conf file for used by asterisk-gui
##

AST_NET_CFG=/etc/asterisk/networking2.conf
SYS_NET_CFG=/etc/networking.conf

IFCONFIG=/sbin/ifconfig
ROUTE=/sbin/route
ETC_RESOLV=/etc/resolv.conf
LAN_INTERFACE=eth0

RELOAD=""

##
# Find out if the network is already configured
#
##

SSHACCESS=""
HOSTNAME=`hostname`
IP_LAN=`$IFCONFIG eth0 | sed -n 's/^.*inet addr:\([0-9\.]*\).*$/\1/p'`
NETMASK_LAN=`$IFCONFIG eth0 | sed -n 's/^.*inet.* Mask:\([0-9\.]*\).*$/\1/p'`
GATEWAY_LAN=`/sbin/route -n | sed -n 's/^0\.0\.0\.0 *\([0-9\.]*\).*$/\1/p'`
SSH_INIT=`ls /persistent/autorun/S[0-9]*sshd 2> /dev/null`
if [  -x "$SSH_INIT" ]; then
	SSHACCESS="yes"
else
	SSHACCESS="no"
fi
DHCP_LAN="no"
DOMAIN_LAN=`cat /etc/resolv.conf | sed -n 's/^domain *\(.*\) *$/\1/p'`
DNS_LAN=`cat /etc/resolv.conf | sed -n 's/^nameserver *\(.*\) *$/\1/p'`

##
# Check if the script was called with the "reload" parameter
#
if [ X$1 = X"reload" ]; then
    echo "Reloading networking..."
    RELOAD=yes
fi


# Rewrite the asterisk network config
echo "Copying file to asterisk/networking2.conf"
mkdir -p /etc/asterisk
echo "[general]" > $AST_NET_CFG
cat $SYS_NET_CFG >> $AST_NET_CFG
 
##
# If an ip address is configured, don't do anything...
# ...unless we are being called with the 'reload' parameter
#
if [[ $IP_LAN ]] && [[ -z $RELOAD ]]; then
    # We got an address from u-boot... overwrite an existing config
    # We will remove any DHCP_LAN line from the config and replace
    # IP_LAN
    echo "Networking was configured from u-boot..."
#    if [ -e $SYS_NET_CFG ]; then
#	sed -i '/DHCP_LAN/d' $SYS_NET_CFG
#	sed -i '/IP_LAN/d' $SYS_NET_CFG
#	sed -i '/NETMASK_LAN/d' $SYS_NET_CFG
#	sed -i '/GATEWAY_LAN/d' $SYS_NET_CFG
#    fi
#    echo "IP_LAN=$IP_LAN" >> $SYS_NET_CFG
#    echo "NETMASK_LAN=$NETMASK_LAN" >> $SYS_NET_CFG
#    echo "GATEWAY_LAN=$GATEWAY_LAN" >> $SYS_NET_CFG
#    echo "DHCP_LAN=no" >> $SYS_NET_CFG
    
else
    # Didn't get an address from u-boot or reloading networking 
    # with new config
    # Load system config and apply it...
    if [ -e $SYS_NET_CFG ];then
	echo "Found $SYS_NET_CFG... configuring networking"
	. $SYS_NET_CFG



ifconfig lo 127.0.0.1
	
        # Now for the real logic in the script. 
        # Note: You CANNOT use functions with msh/busybox.

        # Set our hostname
	if [ "${HOSTNAME}" = "" ]; then
	    HOSTNAME=pika
	fi
	hostname ${HOSTNAME}

        # Turn on our ssh server
	if [[ "${SSHACCESS}" = "yes" ]] && [[ -f "/persistent/autorun/S[0-9]*sshd" ]] && [[ ! -x "/persistent/autorun/S[0-9]*sshd" ]]; then
	    chmod +x /persistent/autorun/S[0-9]*sshd
	    /persistent/autorun/S[0-9]*sshd
	fi
        # Turn off our ssh server
	if [[ "${SSHACCESS}" = "no" ]] && [[ -x "/persistent/autorun/S[0-9]*sshd" ]]; then
	    chmod -x /persistent/autorun/S[0-9]*sshd
	    killall dropbear
	fi

        # Setup the LAN interface(s).
	NETWORK_LAN=`echo "${IP_LAN}" | cut -d '.' -f 1,2,3`
	echo "LAN network is ${NETWORK_LAN}"
	if [[ "${DHCP_LAN}" == "yes" ]] || [[ -z $IP_LAN ]]; then
            echo "Running DHCP client..."
            killall -9 udhcpc 2> /dev/null
            udhcpc -b
	else
	    echo ${IP_LAN} ${HOSTNAME} > /etc/hosts
	    # Delete old default gateways in the routing table 
	    OLDGATEWAY=`route -n | grep "^0.0.0.0" | grep UG | cut -c 17-32`
	    if [ "${OLDGATEWAY}" != "" ]; then
		for i in $OLDGATEWAY; do 
		    route delete default gw $i; 
		done
	    fi
	    ifconfig ${LAN_INTERFACE} ${IP_LAN} netmask ${NETMASK_LAN}
	    if [ -n "$DNS_LAN" ]; then
		rm -f $ETC_RESOLV
		for n in `echo $DNS_LAN` ; do
		    echo nameserver $n >> $ETC_RESOLV
		done
	    fi
	    if [ -n "$GATEWAY_LAN" ]; then
		route add default gw $GATEWAY_LAN
	    fi
	fi
    else
        echo "Warning: could not find $SYS_NET_CFG"
    fi

fi